1、阅读下列四篇短文,从每小题后所给的A,B,C或D四个选项中,选出最佳选项。Medical drugs sometimes cause more damage than they cure. One solution to this problem is to put the drugs inside a capsule, protecting them from the bodyand the body from themuntil they can be released at just the right spot. There are lots of ways to trigger (引
2、发) this release,including changing temperature, acidity, and so on. But triggers can come with their own risksburns, for example. Now, researchers in California have designed what could be a harmless trigger to date: shining nearinfrared light (NIR, 近红外线) on the drug in the capsule.The idea of using
3、 light to liberate the drug in the capsule isnt new. Researchers around the globe have developed polymers (聚合物) and other materials that begin to break down when they absorb either ultraviolet (UV, 紫外线) or visible light. But tissues also readily absorb UV and visible light, which means the drug rele
4、ase can be triggered only near the skin, where the light can reach the capsule. NIR light largely passes through tissues, so researchers have tried to use it as a trigger. But few compounds (化合物) absorb NIR well and go through chemical changes. That changed last year when Adah Almutairi, a chemist a
5、t the University of California, San Diego, reported that she and her colleagues had designed a polymer that breaks down when it absorbs NIR light. Their polymer used a commercially available NIRabsorbing group called onitrobenzyl (ONB). When they catch the light, ONB groups fall off the polymer, lea
6、ding to its breakdown. But ONB is only a soso NIR absorber, and it could be poisonous to cells when it separates from the polymer.So Almutairi and her colleagues reported creating a new material for capsules thats even better. This one consists of a long chain of compounds called cresol groups linke
7、d in a polymer. Cresol contains reactive (易反应的) components that make it highly unstable in its polymeric form, a feature Almutairi and her colleagues use to their advantage. After polymerizing the cresols, they cap each reactive component with a lightabsorbing compound called Bhc. When the Bhcs abso
8、rb NIR light, the reactive groups are exposed and break the long polymer into two short chains. Shining additional light continues this breakdown, potentially releasing any drugs in the capsule. Whats more, Almutairi says, Bhc is 10 times better at absorbing NIR than is ONB and is not poisonous to c
9、ells.1. According to the passage, which of the following could be the best trigger?A. Temperature change. B. NIR light. C. Acidity change. D. UV light.2. Why is ONB unsatisfactory?A. It breaks down when it absorbs NIR light.B. It falls off the polymer and triggers drug release.C. It has not come ont
10、o the market up till now.D. It is not effective enough and could be poisonous.3. Which word can be used to complete the following process of changes?A. protected B. formed C. exposed D. combined【要点综述】这是一篇科技文。怎样使用胶囊?如何让吃药更加平安、疗效更好?文章对此做了介绍。1. B信息理解题。依据第一段最终一句“Now, researchers in California have desig
11、ned what could be a harmless trigger to date: shining nearinfrared light (NIR,近红外线) on the drug in the capsule.”可知答案。2. D推理推断题。依据第三段最终两句“ONB groups fall off the polymer, leading to its breakdown.”和“and it could be poisonous to cells”可知答案。3. C信息理解题。依据最终一段第五句“When the Bhcs absorb NIR light, the reacti
12、ve groups are exposed and break the long polymer into two short chains.”可知此处用exposed,即C项正确。社会生活型阅读理解For all the dinner table, a glass of milk seems to be a constant, at least it was when I was growing up.It was widely believed that milk was integral in building strong bones and teeth.Theres no doubt
13、 that dairy products(乳制品), and milk in particular, are high in protein and calcium, and most milk products are supplemented with Vitamin D and A.While its well known that our bones need calcium, some studies suggest that high calcium intake doesnt necessarily lower a persons risk for fractures(骨折)A
14、Harvard study found that people who drank two or more glasses of milk had no greater protection from breaking a bone than those who drank a glass or less a week.Theres no doubt that we need calcium. Some antidairy supporters claim that dairy can lead to heart disease.Much of this claim is based on h
15、igh fat and high dairy products, like cheeses and creams, which may indeed contribute to cardiovascular problems.Some studies have linked high milk intakes with a risk of prostate cancer; this seems to be caused by highfat dairy products, not dairy in general.Although milk was always regarded as one
16、 of the most important things we need for our bones, yet least promoted, factors involved in strengthening bones.Perhaps we should think of dairy as less like a nutrient and more like a food.If you like it, eat it.If not, findsome_others.Because some claims may not be completely true. When I eat a c
17、ream, Im not thinking about calcium, protein, or any such thing.Im thinking delicious.()1.Which of the following is TRUE on the milk?AThe more milk you drink, the more risk for fractures you might be.BThe more milk you drink, the less risk for fractures you might be.CThe less milk you drink, the les
18、s risk for fractures you might be.DThere is no link between them.()2.Some antidairy supporters claim that dairy can lead to except_.Acardiovascular problemsBheart diseaseCprostate cancerDstomach cancer()3.The underlined words “some others” in the last paragraph refer to_.Adairy productsBmilkCfood Dc
19、ream()4.Whats the authors attitude towards milk?AHe doesnt like milk any more. BHe used to drink milk as a child.CHe regards milk as a nutrient.DHe always cares about calcium, protein when he eats something.()5.We can learn from the text that_.Aall the claims are not completely trueBhigh milk intake
20、s can lead to cancerCits necessary for you to reduce milk intakesDgive up milk for your health【解析】1D细节理解题。依据其次段的“A Harvard study found that people who drank two or more glasses of milk had no greater protection from breaking a bone than those who drank a glass or less a week.”可以推断出牛奶的饮用量和骨折之间没有必定的联系
21、。2D细节理解题。依据第三段的有关信息可以得知文中没有涉及胃病的问题。3C推理推断题。依据最终一段“Perhaps we should think of dairy as less like a nutrient and more like a food. If you like it, eat it. If not,find some others.”可知作者的观点是假如宠爱就用,不宠爱就换其他的食品(物)。4B推理推断题。依据第一段的“.at least it was when I was growing up”可以推断出作者在小时候是经常喝牛奶的。5A推理推断题。由“Because so
22、me claims may not be completely true”可以得知并不是全部的声明都是完全正确的。由此可知选A。阅读理解。The small unframed painting called “Fisherman” was signed by a little-known Italian artist, Maveleone (1669-1740). When it was sold recently in New York for $27,000, the seller, Mr. Oliver Pitt, was asked to explain how the picture
23、 had come into his possession. Pitt said, “I didnt know it was so valuable. Im not an art expert. Photography is my hobby. I bought Fisherman in Italy in 1970 for $140. The picture was dirty, and I couldnt see the artists signature. But anyway it wasnt the picture that I liked. I bought it because o
24、f the frame. ”“Its a most unusual frame, made of tiny, silvery sea-shells. They are set in such a way that they reflect perfect light onto the surface of a picture. I now have a photograph of my wife in that frame, and Ill never part with it.”“When I returned to New York I showed the painting in its
25、 frame to a customs officer. I told him that I had paid $140 for it but admitted I didnt know its actual worth. The customs man valued it at $140, and I was asked to pay duty on that value. I did so, there and then. ” “Later, I took off the frame, and that uncovered Maveleones signature. My wife sug
26、gested in fun that the painting might be a valuable one, so I cleaned it and put it up for sale.” As a result of this explanation, Oliver Pitt had to appear in court. He was accused of knowingly making a false statement of the value of a picture so as to cheat the Customs Department. Pitt was not ha
27、ppy. “I told the truth as I knew it then,” he said, “What else could I say?”And then the judge agreed with him. “The Customs Department is to be responsible,” he said, “for making a true valuation of goods brought into the country, so that the correct amount of duty may be charged. Mr. Pitt did not
28、cause or try to cause the mistake that was made. He paid the duty that was demanded. If, now, the Customs Department finds that its valuation was not correct, it cannot be allowed to have another try. Pitt is not guilty”.8. When Oliver Pitt bought the picture, _. A. it was unframed B. Maveleone sign
29、ed the deal C. he suggested that it was valuable D. it was the frame that attracted him 9. From the passage we can infer that if Maveleone had been a well-known artist, _. A. the painting would have cost much more than $ 140B. he wouldnt have sold his paintingC. the customs officer wouldnt have been
30、 cheatedD. Pitt wouldnt have had the intention to buy any of his paintings 10. Pitt took off the frame probably in order to _. A. clean the painting to put it up for saleB. look for the artists signatureC. use it for his wifes photographD. find the paintings true value11. Which of the following stat
31、ements is TRUE according to the story? A. In the end Pitt was asked to pay the correct amount of duty. B. In the end Pitt sold the frame of the painting at an even higher price. C. In the end the Customs Department had no right to revalue the painting. D. In the end Pitts wife was regarded as an exp
32、ert because of her wise suggestion.811、阅读理解-(D)For the person keeping a journal, whatever he experiences and wants to hold he can write down. But to get it down on paper begins another adventure. For he has to focus on what he has experienced, and to be able to say what, in fact, the experience is.
33、What of it is new? What of it is remarkable because ofassociations in the memory it stirs up? It is a good or bad thing to have happened? And why, specifically? The questions multiply (增多) themselves quickly. As one tries to find the words that best represent this discovery, the experience becomes e
34、ven clearer in its shape and meaning.Beyond the value of the journal as record, there is the value of the discipline it teaches. The journalist begins to pay closer attention to what happened to and around himself. He develops and sharpens his skills of observation. He learns the usefulness of langu
35、ages as a means of representing what he sees, and gains skill and certainty in the expression of his experiences. To have given up ones experience to words is to have begun marking out the limits and potential of its meaning. In the journal that meaning is developed and clarified (澄清、阐明) to oneself.
36、 When the intention of the development ofthat meaning is the consideration of another reader, the method of the journal redirects itself and it becomes the essay.12. According to the author, keeping a journal is good for _.A. observation and expressionB. certainty and disciplineC. experience and adv
37、entureD. consideration and development13. By keeping a journal, one can _.A. develop the usefulness of languageB. develop his memoryC. clarify the consideration to everyoneD. have a thorough understanding of his experience14. Which of the following statements is NOT correct?A. The journalist can exp
38、ress what has happened.B. A journal can serve as a record of the past happening.C. The journalist must be able to observe closely.D. Writing helps develop the consideration of others.15. The passage is mainly about _.A. how to write a journalB. the expressions of a journalC. the values of keeping a journalD. how to solve the problems in a journal1215、